Simmer the lamb shank without boiling
180 minPlace the 1.2 kg bone-in lamb shank in a large pot and cover with 3 liters of COLD water. Starting with hot water would immediately seal the meat’s surface and keep its flavor from enriching the broth. Bring it to a simmer over medium heat and skim all the gray foam from the surface; the broth becomes clear during these first 10 minutes, not later. Once the foam stops, add 1 dry onion, 2 bay leaves and 15 g salt. Reduce the heat until only an occasional bubble breaks the surface. Leave the lid slightly ajar and simmer for 3 hours.